# coding=utf-8
from flask import abort, jsonify
from flask import current_app
from flask import g
from flask import render_template
from flask import request
from flask import session

from info import constants, db
from info.models import News, Category, User, Comment, CommentLike
from info.modules.news import news_blu
from info.utils.common import user_login_data
from info.utils.response_code import RET


@news_blu.route("/news_collect", methods=["POST"])
@user_login_data
def collect_news():
    """
    收藏时间
    1. 接收参数
    2. 判断参数
    3. 查询新闻, 并判断新闻是否存在
    :return:
    """

    user = g.user
    if not user:
        return jsonify(errno=RET.SESSIONERR, errmsg="用户未登录")

    # 1. 接收参数
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    # 2. 判断参数
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误.")

    if action not in ["collect", "cancel_collect"]:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误..")

    try:
        news_id = int(news_id)
    except Exception as ret:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误...")

    # 3. 查询新闻, 并判断新闻是否存在
    try:
        news = News.query.get(news_id)
    except Exception as ret:
        return jsonify(errno=RET.DATAERR, errmsg="数据查询错误")

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查寻到新闻数据")

    # 4. 收藏与否
    if action == "collect":
        if news not in user.collection_news:
            # 添加到用户的收藏列表
            user.collection_news.append(news)
            print("OKOKOKO")
            db.session.commit()
            return jsonify(errno=RET.OK, errmsg="OK")
    else:
        if news in user.collection_news:
            user.collection_news.remove(news)
            db.session.commit()
        return jsonify(errno=RET.OK, errmsg="OK")

    # try:
    #     db.session.commit()
    # except Exception as ret:
    #     current_app.logger.error(ret)
    #     db.session.rollback()
    #     return jsonify(errno=RET.DBERR, errmsg="保存失败")
    #
    # return jsonify(errno=RET.OK, errmsg="操作成功")

@news_blu.route("/<int:news_id>")
@user_login_data
def news_detail(news_id):
    """
    新闻详情
    :param news_id
    :return:
    """

    # 查询用户登录信息
    user = g.user

    # 右侧新闻排行逻辑
    news_list = []
    try:
        news_list = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS)
    except Exception as ret:
        current_app.logger.error(ret)
    news_dict_li = []
    for news in news_list if news_list else []:
        news_dict_li.append(news.to_basic_dict())

    # 查询分类数据
    Categories = Category.query.all()
    category_li = []
    for category in Categories:
        category_li.append(category.to_dict())

    # 查询新闻数据
    news = None

    try:
        news = News.query.get(news_id)
    except Exception as ret:
        current_app.logger.error(ret)

    if not news:
        abort(404)

    # 更新新闻点击次数
    news.clicks += 1

    is_collected = False
    # 如果用户已登录, 判断用户是否已经收藏当前新闻: is_collected = True
    if user:
        # 判断用户是否已经收藏当前新闻, 后面可以不用加all(), 会自动加载
        if news in user.collection_news:
            is_collected = True

    # 获取查询评论数据
    comments = []
    try:
        comments = Comment.query.filter(Comment.news_id==news_id).order_by(Comment.create_time.desc()).all()
    except Exception as ret:
        current_app.logger.error(ret)

    comment_like_ids = []
    try:
        comments_ids = [comment.id for comment in comments]
        if len(comments_ids) > 0:
            # 获取当前用户在当前新闻的所有评论点赞的记录
            comment_likes = CommentLike.query.filter(CommentLike.comment_id.in_(comments_ids),
                                                     CommentLike.user_id == user.id).all()
        # 取出所有评论的id
        comment_like_ids = [comment_like.comment_id for comment_like in comment_likes]
    except Exception as ret:
        current_app.logger.error(ret)

    comment_dict_li = []
    for item in comments if comments else []:
        comment_dict = item.to_dict()
        comment_dict["is_like"] = False
        # 判断用户是否点赞该评论
        if user and item.id in comment_like_ids:
            comment_dict["is_like"] = True
        comment_dict_li.append(comment_dict)
    print(comment_dict_li)


    data = {
        "user": user.to_dict() if user else None,
        "news_dict_li":news_dict_li,
        "news":news.to_dict(),
        "is_collected":is_collected,
        "comments":comment_dict_li
    }

    return render_template("news/detail.html", data=data)


@news_blu.route("/news_comment", methods=["POST"])
@user_login_data
def add_news_comment():
    """添加评论"""

    user = g.user
    if not user:
        return jsonify(errno=RET.SESSIONERR, errmsg="用户未登录")

    # 获取参数
    news_id = request.json.get("news_id")
    comment_str = request.json.get("comment")
    parent_id = request.json.get("parent_id")

    if not all([news_id, comment_str]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误.")

    try:
        news_id = int(news_id)
        if parent_id:
            parent_id = int(parent_id)
    except Exception as ret:
        current_app.logger.error(ret)
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误..")


    try:
        news = News.query.get(news_id)
    except Exception as ret:
        current_app.logger.error(ret)
        return jsonify(errno=RET.DBERR, errmsg="查询数据失败")

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="该新闻不存在...")

    # 初始化模型, 保存数据
    comment = Comment()
    comment.user_id = user.id
    comment.news_id = news.id
    comment.content = comment_str
    if parent_id:
        comment.parent_id = parent_id

    # 保存到数据库
    try:
        db.session.add(comment)
        db.session.commit()
    except Exception as ret:
        current_app.logger.error(ret)
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")

    return jsonify(errno=RET.OK, errmsg="OK...", data = comment.to_dict())


@news_blu.route("/comment_like", methods=["POST"])
@user_login_data
def set_comment_like():
    """评论点赞"""

    user = g.user
    if not user:
        return jsonify(errno=RET.SESSIONERR, errmsg="用户未登录")

    # 获取参数
    comment_id = request.json.get("comment_id")
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    if not all([comment_id, news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误.")

    if action not in ["add", "remove"]:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误.")

    # 查询评论数据
    try:
        comment = Comment.query.get(comment_id)
    except Exception as ret:
        current_app.logger.error(ret)
        return jsonify(errno=RET.DBERR, errmsg="查询数据失败")

    if not comment:
        return jsonify(errno=RET.NODATA, errmsg="评论数据不存在")

    if action == "add":
        comment_like = CommentLike.query.filter_by(comment_id=comment.id, user_id=user.id).first()
        if not comment_like:
            comment_like = CommentLike()
            comment_like.comment_id = comment_id
            comment_like.user_id = user.id
            db.session.add(comment_like)
            comment.like_count += 1
    else:
        print("---------")
        # 删除点赞数据
        comment_like = CommentLike.query.filter_by(comment_id=comment.id, user_id=user.id).first()
        if comment_like:
            db.session.delete(comment_like)
            # 减小点赞条数
            comment.like_count -= 1

    try:
        db.session.commit()
    except Exception as ret:
        current_app.logger.error(ret)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="操作失败")

    return jsonify(errno=RET.OK, errmsg="操作成功")

